I-5 (hwy 1) SB over HWY 51 SB
GoodClackamas County, Oregon · 020 MI N Marion-Clack LN · Structure no. 20419 001 28228
- Built
- 2007
- 18 years old
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 107 ft
- 1 main span
- Daily traffic
- 63,616
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I-5 (hwy 1) SB over HWY 51 SB is a prestressed concrete stringer/multi-beam or girder carrying I-5 (hwy 1) SB over HWY 51 SB in Clackamas County, Oregon. It was built in 2007, so it is 18 years old, younger than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 63,616 vehicles a day, roughly 13% of them trucks, projected to reach 77,500 by 2042. The structure is 107 ft (32.5 m) long and 71 ft wide. If it were closed, the detour would be 12.4 mi (20 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-5 (hwy 1) SB over HWY 51 SB built?
It was built in 2007, making it 18 years old in 2025.
What condition is I-5 (hwy 1) SB over HWY 51 SB in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.
How much traffic does I-5 (hwy 1) SB over HWY 51 SB carry?
About 63,616 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is I-5 (hwy 1) SB over HWY 51 SB?
The structure is 107 ft (32.5 m) long with a longest span of 107 ft (32.5 m) and a deck 71 ft wide.
Who owns I-5 (hwy 1) SB over HWY 51 SB?
It is owned by the State Highway Agency.